Is polycarbonate and high index the same?
Polycarbonate eyeglass lenses are a type of high-index lens that are also scratch and impact resistant and protect your eyes from UV. This material is highly recommended for people in jobs that are high risk for eye injury and for anyone under the age of 18.
Is high index more clear than polycarbonate?
As a rule of thumb, if you have a strong prescription, high-index is the way to go. You’ll get thinner lenses with superior optical clarity. If your prescription isn’t quite as extreme (not in the range presented above), polycarbonate is a great choice. It’s lightweight, strong and the lenses generally cost less.
Are 1.6 index lenses polycarbonate?
We offer a few different indexes on our lenses. Our polycarbonate lenses have a 1.59 index which, while quite thin, is more focused on durability than lightness. Our 1.6, 1.67, and 1.74 index lenses can all be considered high index. These lenses are super-thin but are also more expensive than the polycarbonate option.
When should you get 1.67 high index lenses?
High-index lenses are eyeglass lenses that are designed to be thinner and lighter than regular lenses. They are generally recommended for people who have significantly high refractive errors and strong prescriptions for nearsightedness, farsightedness, or astigmatism.
Do high index lenses break easily?
High index lenses tend to be more brittle than the average pair of glasses. They may scratch and even shatter more easily than their other counterparts but there are usually anti-scratch coatings which can be added if necessary.
Is there a big difference between 1.61 and 1.67 high index lenses?
1.67 High Index 1.67 high-index lenses surpass in thinness and lightness when compared to 1.61 high-index lenses. It helps with eye distortion caused by stronger prescriptions and is ideal for individuals with an SPH correction between +/- 7.00 and +/- 9.00, and a CYL correction between +/- 3.25 and +/- 4.00.
